Mots-clés
Chine ; Chine du Nord-Est ; Développement durable ; Erosion des sols ; Indice ; Modèle ; Productivité agricole ; Sol noir ; VulnérabilitéAgricultural productivity ; Black soil ; China ; Index ; Model ; North-Eastern China ; Soil erosion ; Sustainable development ; VulnerabilityChina ; Desarrollo sostenible ; Erosión de los suelos ; Modelo ; Productividad agrícola ; Vulnerabilidad ; ÍndiceSoil loss tolerance in the black soil region of Northeast China
Auteur(s) et Affiliation(s)
DUAN, X.
Asian International Rivers Center, Yunnan University, Kunming, Chine
XIE, Y.
State Key Lab. of Earth Surface Processes and Resource Ecology, School of Geography, Normal Univ., Beijing, Chine
LIU, B.
State Key Lab. of Earth Surface Processes and Resource Ecology, School of Geography, Normal Univ., Beijing, Chine
LIU, G.
State Key Lab. of Earth Surface Processes and Resource Ecology, School of Geography, Normal Univ., Beijing, Chine
FENG, Y.
State Key Lab. of Earth Surface Processes and Resource Ecology, School of Geography, Normal Univ., Beijing, Chine
GAO, X.
State Key Lab. of Earth Surface Processes and Resource Ecology, School of Geography, Normal Univ., Beijing, Chine
Description :
Soil loss tolerance (T) is the maximum rate of annual soil erosion that is tolerated and still allows a high level of crop productivity to be sustained economically and indefinitely. In the black soil region of Northeast China, an empirically determined, default T value is used for designing land restoration strategies for different types of soils. The aim of this study was to provide a methodology to calculate a quantitative T for different black soil species. A field investigation was conducted to determine the typical soil profiles of 21 black soil species in the study area and a quantitative methodology based on a modified soil productivity index model was established to calculate the T values. Compared with the currently used of regional unified standard T value, the proposed method, which determines T using specific soil profile indices, has more practical implications for effective, sustainable management of soil and water conservation.
Type de document :
Article de périodique
Source :
Journal of geographical sciences. Acta geographica sinica, issn : 1009-637X, 2012, vol. 22, n°. 4, p. 737-751, nombre de pages : 15, Références bibliographiques : 44 ref.
Date :
2012
Editeur :
Pays édition : Chine
Langue :
Anglais
Anglais
Droits :
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Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)